include/asm-arm/arch-sa1100/uncompress.h

   1 /*
   2  * linux/include/asm-arm/arch-brutus/uncompress.h
   3  *
   4  * (C) 1999 Nicolas Pitre <nico@cam.org>
   5  *
   6  * Reorganised to be machine independent.
   7  */
   8
   9 #include "hardware.h"
  10
  11 /*
  12  * The following code assumes the serial port has already been
  13  * initialized by the bootloader.  We search for the first enabled
  14  * port in the most probable order.  If you didn't setup a port in
  15  * your bootloader then nothing will appear (which might be desired).
  16  */
  17
  18 #define UART(x)         (*(volatile unsigned long *)(serial_port + (x)))
  19
  20 static void putstr( const char *s )
  21 {
  22         unsigned long serial_port;
  23
  24         do {
  25                 serial_port = _Ser3UTCR0;
  26                 if (UART(UTCR3) & UTCR3_TXE) break;
  27                 serial_port = _Ser1UTCR0;
  28                 if (UART(UTCR3) & UTCR3_TXE) break;
  29                 serial_port = _Ser2UTCR0;
  30                 if (UART(UTCR3) & UTCR3_TXE) break;
  31                 return;
  32         } while (0);
  33
  34         for (; *s; s++) {
  35                 /* wait for space in the UART's transmitter */
  36                 while (!(UART(UTSR1) & UTSR1_TNF));
  37
  38                 /* send the character out. */
  39                 UART(UTDR) = *s;
  40
  41                 /* if a LF, also do CR... */
  42                 if (*s == 10) {
  43                         while (!(UART(UTSR1) & UTSR1_TNF));
  44                         UART(UTDR) = 13;
  45                 }
  46         }
  47 }
  48
  49 /*
  50  * Nothing to do for these
  51  */
  52 #define arch_decomp_setup()
  53 #define arch_decomp_wdog()